Safety-joint.



H. w. PETERS. SAFETY JOINT.

APPLICATION FILED AUG.20, I914.

Patented Aug. 3, 1915.

Witnesses Attorneys HENRY w. PETERS, 0F BosTon, iurissriori srirrrsf SAFE Y- oins.

To all whom itmay concern: I

Be it known thatI, HENRY W PETERs, a citizen of the United States, residing at Boston, in the county of Suffolk and State of Massachusetts, have invented a new and useful Safety-Joint, of which the following is a specification. r

.The present invention appertains to a safety joint for jewelry," and aims'to provide a novel and improved hinge joint for connecting the pins or tongues to badges, buttons, or other articles of jewelry, whereby there will be no liability for thepin or tongue and article or body becoming detached and lost. 7

As a more specific object, the presentinvention contemplates the provision of a .hinge joint embodying a hinge pin assembled with the hinge earsun a peculiar manner, to lock'the hinge pin against :removal or withdrawal, to hold the: ears against separation, and to provide an; efli-- cient bearing for the eye of the pin or tongue. 1

It is also withinthe scope of the inven-.

tion, to provide a safety joint of. the character indicated, which will be comparatively simple and inexpensive in construction, which will enable the component parts to be readily assembled, and whichwill be prac tical, convenient and eflicient in its use.

With the foregoing and other ob ects 1n view which will appear as. the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed, can be made within the scope of what is claimed, without a departing from the spirit of the invention; 4

The invention has been illustrated in its preferred embodiments in the accompanying drawing, wherein Figure 1 is a perspective view of an article of jewelry embodying the improved hinge joint. Fig. 2 is an enlarged sectional view of the joint prior to the squeezing or compressing of the hinge pin. Fig. 3 is a View similar to Fig. 2, illustrating the hinge pin in compressed and assembled position. a Fig. 4 is a view similar to Fig. 3, illustrating a modification, the hinge pin being illustrated in its original position in dotted lines.

In carrying out the present invention, there is provided a hinge body or member Specification of Letters Patent.

gageable with the catch or hook6 secured to the: article2, 'it being understood that a ii dAus-i 33 11 A licationfiiedsu tao,19 n seriainassa'ree.

safety'catches such as disclosed in my coending application serial No. 780,299, and

atent No. -1, 112,317,-m'ay beemployedif I p I Coming to the salient and cardinal fea'* desired. 1

tures' of the present invention, the ears 3 are provided with central apertures alin'ing with the aperture of theeye 5, and'the ears 3 are providedwith annular grooves or rahbets "7 adjacent their inner'faces and surrounding'the inner ends of the apertures of the ears, While the apertures or bores of the ears 3 are flared or tapered as at 8 from thegrooves 7 to the outer facesor sides'of" theears. The outer sides or faces of the ears 3; are preferably rounded, so as to thicken the ears, and to elongate the apertures or boresof the ears'correspondingly to provide a firin-hold-for the hinge pin 9. The tapered portions 8 of the apertures orbores of the ears3, extend "inwardly, that is, the

disposed. outermost. I 1

The hinge pin 9 inits original condition,"

is straightand of uniform diameter than the aggregate lengths of the apertures of the ears 3 and eye 5, whereby-when the hingepin 9 is inserted through the said apertures, the ends of the hinge pin will protrude as seen in Fig. 2.

In assembling the several parts, the eye 5 of the pin or tongue 4 is firstinserted between the ears 3,v and the hinge pin 9 is then inserted through the ears 3 and eye 5 largestsends of the tapered portions 8 are as seen in Fig. 2. The hinge pin!) is then squeezed or compressed longitudinally or axially, so as to shorten the same, and to compress the same. snugly or tightly into the grooves or rabbets 7 and the tapered portions 8 of the apertures of the ears 3. It is to be noted that due to the provision of the. grooves 7 and tapered portions 8, there is provided between each groove and tapered portion, a sharp annular ridge, so that when the pin is expanded within the ears 3 and eyet5, the said sharp ridges will serveto cut the pin in order that it will properly expand within the grooves '7: "It

is also to be understood that the deviceds illustrated on an enlarged scale in the 'drawing, and that the spaces between the ears ,3 and eye 5 are exaggerated, since in practice theleye 5, wj0uld fit -snugly between the ears 3 to avoid the possibility of the hinge pin expanding intothe space between the ears and eye. It is'possible ,that'the hinge pm mightexipand within-the eye 5, but this would not impairlthev swinging movement ofthe tongue 4, but onv the other hand, would cause thefto'ng ue' to swing without 7 any loose play; If the tongue should work orjswing hard after the hinge pin has been expanded within the ears; and eye, the tongue maybe oscillated to): provide smooth bearing surfaces between the hinge .pin and eye, and the bearing surfaces therebetween sides of the eye 5, to holdthe eye in place,

to enable the same to rotate in'the true manner. The annular ribs 10 will also reduce the wear between the eye- 5 and the ears 3 i and the expanded tapered portions 11 of the hingepin 9within the tapered portions 8 of the apertures or bores of the ears 3, will firmly hold theears and hinge pin in proper assembled relation Thetends of the hinge pin 9 are finally y; the outer faces of the ears 3.

Copies o 1 this patent 'n a y optained for The present joint will prevent the pin or tongue fafr'om becoming loosened from the hinge; member or body 1' which is secured to the article '2, and as a result, the liabilityfor filed or trimmed flush with the article 2' being lost will be reduced to a minimum.

"In the variation illustrated in Fig. l, the hinge body or member 1 has the ears 3 be tween which the eye 5 of the pin or tongue is disposed, and the aperturesor bores of the ears 3 are provided with annular grooves or rabbets 7 around their inner or adjacent ends, and the, said apertures or bores are tapered outwardly, as at 8, from the grooves or rabbets" 7 to the outer faces of theears. The .soft metal hinge pin 9 .is

inserted-through the apertures of the ears 3, and eye5', and is squeezed or compressed longitudinally so that its central or intermediate portion is expanded within the apertures of the ears and eye, and to provide the annular ribs or beads 10 fitting within fitting within the tapered portions 8 of the apertures or bores of the ears.

The variation illustrated in Fig. & has the same general functions as the form of the invention illustrated in Figs. 2 and 3. j Having thus "described the invention, what is claimed, as new is I the grooves 7 andthe tapered portions 11 y j A safety hinge joint embodying a pair of spaced apertured ears, an eye disposed between the ears, each ear having an annular groove surrounding the inner end of its aperture and having its aperture tapered from the said groove to the outer face of the ear to provide a sharp annular ridge be tween the groove and tapered portion, and a soft metallic hinge pin disposed within the apertures of the ears and eye and having expanded portions fitting tightly within the said grooves and tapered portions of the apertures of the ears.

In testimony "that I claim the foregoing as my own, I have hereto affixed: my signature in the presence of two witnesses.

I p HENRY w. Purses; Witnesses:

WALLACE A. GLEASON,

I GEORGE A. PETERS.

five cents each, by addressing the Commissioner of Patents, 1 Washington, D. 0;; Y 

